The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2015
Filed:
Nov. 29, 2010
Daniel John Robson, Okotoks, CA;
Paul Allan Sibbald, Calgary, CA;
Laurier E. Comeau, Ldeuc, CA;
Christopher Konschuh, Calgary, CA;
Daniel John Robson, Okotoks, CA;
Paul Allan Sibbald, Calgary, CA;
Laurier E. Comeau, Ldeuc, CA;
Christopher Konschuh, Calgary, CA;
Arrival Oil Tools, Inc., , CA;
Abstract
A downhole apparatus for reaming a borehole incorporates two sets of cutting structures into two integral blade stabilizers, one oriented downhole and the other oriented uphole. The cutting structures comprise polycrystalline diamond cutters that are brazed into a wedge of steel that is inserted into the body of the reamers in an axial direction and retained by a stop block and retention cover that is bolted into the reamer. The two integral blade stabilizers have a combination left hand/right hand blade wrapping to provide 360° support around the circumference of the reamer. Between the two stabilizers, an impeller and a flow accelerator agitate cuttings on the low side of the borehole to mix the cuttings in with the drilling mud.